Booking Air France First Class using points

Only Flying Blue Platinum or Ultimate elite members can book Air France First Class (called La Première) directly using points. The cabin which costs around 200,000-300,000 Flying Blue miles.

The work around is to book a business class award ticket using points, then upgrade with cash at check-in for around $1,500 to $2,500.

An Air France first class seat regularly sells for $10,000 to $20,000, but can pay 60,000 points for business class plus $1,500-$3,000 for the upgrade.

https://roame.travel/guides/how-to-book-air-france-first-class-points